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WO2025045674A1 - Chaussure, systèmes de production de chaussure et procédé de production de chaussure - Google Patents

Chaussure, systèmes de production de chaussure et procédé de production de chaussure Download PDF

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Publication number
WO2025045674A1
WO2025045674A1 PCT/EP2024/073400 EP2024073400W WO2025045674A1 WO 2025045674 A1 WO2025045674 A1 WO 2025045674A1 EP 2024073400 W EP2024073400 W EP 2024073400W WO 2025045674 A1 WO2025045674 A1 WO 2025045674A1
Authority
WO
WIPO (PCT)
Prior art keywords
midsole
thermoplastic polymer
shoe
cavity
carrier
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/EP2024/073400
Other languages
English (en)
Inventor
Johannes VOELCHERT
Elias Miguel ORTIZ
Renaud DESPOTS ALLAIRE
Jean-Philippe Romain
Nils Arne ALTROGGE
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
On Clouds GmbH
Original Assignee
On Clouds GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by On Clouds GmbH filed Critical On Clouds GmbH
Priority to EP24758811.4A priority Critical patent/EP4536471A1/fr
Publication of WO2025045674A1 publication Critical patent/WO2025045674A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D35/00—Producing footwear
    • B29D35/06—Producing footwear having soles or heels formed and joined on to preformed uppers using a moulding technique, e.g. by injection moulding, pressing and vulcanising
    • B29D35/061—Producing footwear having soles or heels formed and joined on to preformed uppers using a moulding technique, e.g. by injection moulding, pressing and vulcanising by injection moulding
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43D—MACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACTURING OR REPAIRING FOOTWEAR
    • A43D86/00—Machines for assembling soles or heels onto uppers, not provided for in groups A43D25/00 - A43D83/00, e.g. by welding
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B23/00—Uppers; Boot legs; Stiffeners; Other single parts of footwear
    • A43B23/02—Uppers; Boot legs
    • A43B23/0205—Uppers; Boot legs characterised by the material
    • A43B23/0215—Plastics or artificial leather
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B23/00—Uppers; Boot legs; Stiffeners; Other single parts of footwear
    • A43B23/02—Uppers; Boot legs
    • A43B23/0245—Uppers; Boot legs characterised by the constructive form
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D35/00—Producing footwear
    • B29D35/12—Producing parts thereof, e.g. soles, heels, uppers, by a moulding technique
    • B29D35/122—Soles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y80/00—Products made by additive manufacturing

Definitions

  • the present invention lies in the field of shoe manufacturing technology and relates in particular to a method for producing a shoe, a shoe and a shoe production system.
  • the sole and often even the midsole and the outsole, and the upper are produced separately and with different machines. Depending on the production method it may even be necessary to use multiple machines only for sole production.
  • the lasted upper is connected to the sole typically by using an adhesive to establish a material-bonding connection between upper and sole.
  • stitching can be used to support the connection between upper and sole.
  • human workforce is required and the produced intermediate parts have to be transported from one machine to another.
  • midsole foam molding is typically done by inserting a granulated polymer manually into a mold, closing the mold and foaming, manually removing the midsole and manually removing offcut material.
  • a method and a shoe production system is provided which is more efficient and/or reduces the required human workforce and/or reduces the demand of resources and/or waste, and/or is less harmful to the environment.
  • a shoe is provided which has been produced by such a method or with such a shoe production system. Such a shoe has a smaller ecological footprint and is cheaper in production costs.
  • a first aspect of the invention relates to a method for producing a shoe.
  • the method comprises steps a. to d. as discussed further below.
  • steps a. to d. as discussed further below.
  • designations of steps such as a., b., or d. are not to be understood as defining a specific order of steps, but serve to unambiguously identify a specific step. Therefore, while it may be the case in some embodiments that step a. is followed by step b., which is followed by step c., which is followed by step d., it may well be possible in some other embodiments that for example step b. is performed before and/or during step a.
  • Step a. comprises: providing an upper assembly.
  • the upper assembly comprises an upper which is mounted on a carrier.
  • the upper comprises a bottom section which is made from a thermoplastic polymer upper material. It should be noted that it is also possible that the rest of the upper, or another portion thereof may be made from the same thermoplastic polymer upper material or from a different material. Typically however, at least the bottom section is made from the thermoplastic polymer upper material. Preferably, the majority of the upper (i.e. more than 50 wt.%) or even all of the upper may be made from the same thermoplastic polymer upper material.
  • Step d. comprises: introducing, in particular injecting, a midsole polymer composition comprising a molten thermoplastic polymer midsole material into the cavity and foaming the molten thermoplastic polymer midsole material inside the cavity.
  • a foamed midsole is provided and a material-bonded connection, in particular a direct material-bonded connection, more particular a fused connection, between the upper, in particular the bottom section of the upper, and the foamed midsole is established.
  • the molten thermoplastic polymer midsole material has a melting temperature which is equal to or higher than the melting temperature of the thermoplastic polymer upper material.
  • thermoplastic polymer midsole material contacts and melts the bottom section of the upper being inserted into the cavity.
  • the thermoplastic polymer midsole material contacts and melts at least parts of or the whole bottom section of the upper.
  • the midsole polymer composition may for example be introduced into the sole molding compartment being delimited by the upper assembly and the sole molding unit.
  • the shape of the sole molding compartment defines the shape of the foamed midsole.
  • the molten thermoplastic polymer upper material is introduced into the cavity and directly foamed therein.
  • melting temperature may for example refer to a specific melting point, e.g. in case a single or pure material is used as thermoplastic polymer upper material or thermoplastic polymer midsole material, or can also relate to a melting temperature range, for example when a mixture of different base materials is used as thermoplastic polymer upper material or thermoplastic polymer midsole material.
  • the bottom section of the upper is typically arranged at the bottom of the carrier and may preferably be the section forming the peripheral lower delimitation of the upper in the produced shoe at the transition to the foamed midsole.
  • the bottom section may typically circumferentially surround the foot of the wearer.
  • the bottom section may also be the region of the upper being in the worn state arranged underneath the foot of the wearer, respectively during production between the carrier and the foamed midsole.
  • the bottom section may extend up to 3 cm in the vertical direction of the upper.
  • thermoplastic polymer upper material is used to indicate that this material is the thermoplastic polymer material which is present in the upper of the formed shoe.
  • thermoplastic polymer midsole material is used to indicate that this material is the thermoplastic polymer material which is present in the midsole of the formed shoe.
  • the thermoplastic polymer upper material and the thermoplastic polymer midsole material may in some embodiments be the same material or they may also be different materials.
  • thermoplastic polymer outsole material is used to indicate that this material is the thermoplastic polymer material which is present in the outsole of the formed shoe.
  • the thermoplastic polymer upper material, the thermoplastic polymer midsole material and the thermoplastic polymer outsole material may in some embodiments be the same material or they may also be different materials.
  • a direct material-bonded connection of two elements means that they are connected with each other without an additional adhesive.
  • a direct material- bonded connection may be a fused connection in which the two elements are fused to each other.
  • SCIF supercritical injection foaming
  • the molten thermoplastic polymer midsole material can be provided by melting a thermoplastic polymer midsole material, for example in a melting unit or in an extruder, e.g. inside a screw and barrel extruder.
  • the thermoplastic polymer midsole material can be provided as a granulate which can be melted.
  • the carrier is removed from the upper after step d.
  • the carrier may preferably be a last, e.g. a shoe last, or at least a portion of a last.
  • a last may for example be a standardized last for a particular shoe size or it may also be a customized last, e.g. a last which has been produced based on a preceding scan of the foot of a wearer.
  • a last may be provided by molding, additive manufacturing or by subtractive manufacturing, such as milling.
  • the foamed midsole is cooled after step d.. This may be done either in the cavity or after removal of the foamed midsole and the thereto material-bonded, in particular fused, upper from the cavity.
  • the sole molding unit typically comprises, respectively defines, one or more injection openings being configured for introducing the midsole polymer composition into the cavity, respectively into the sole molding compartment.
  • step d. is performed by, respectively comprises or consists of, supercritical injection foaming (SCIF).
  • SCIF has the advantage that the volatile organic compound emissions are significantly reduced as compared to conventional foaming. Furthermore, in contrast to other foaming techniques, it is not necessary to use nucleating agents and/or to coat the mold with chemical agents for facilitating demolding. Therefore, SCIF is more environmentally friendly and easier to perform.
  • SCIF as used in some embodiments of the invention, may comprise the injection of the midsole polymer composition into the cavity, preferably by an injection unit, for example an extruder, such as a screw and barrel extruder.
  • the midsole polymer composition may in such embodiments comprise, or consist of, a molten thermoplastic polymer midsole material and a supercritical fluid, e.g. N2 or CO2.
  • the midsole polymer composition used in SCIF in some embodiments of the invention may be injected in step d. into the cavity as a single phase, i.e. as a homogenous single phase.
  • the midsole polymer composition is injected into the cavity, wherein the pressure in the cavity is lower than the pressure in the injection unit, in particular in the barrel of the extruder.
  • This has the effect that foaming occurs directly upon injection and ceases when the cavity, in particular the sole molding compartment, is filled at the maximum filling capacity under the applied conditions.
  • These conditions may in particular comprise the pressure in the cavity and the injection unit. Due to the lower pressure in the cavity and the SCIF method in general, the foamed midsole does not expand after deforming.
  • the cavity dictates directly and accurately the size of the foamed midsole.
  • the pressure in the cavity may be between 800 bar to 1200 bar, in particular 900 bar to 1000 bar, lower than the pressure in the injection unit.
  • the cavity is pressurized to a first cavity pressure above atmospheric pressure, prior and/or during injection of the midsole polymer composition.
  • the first cavity pressure may be provided as a gas counter pressure to the cavity.
  • the pressure in the cavity i.e. the first cavity pressure
  • the pressure in the injection unit e.g. in the barrel of the extruder
  • the pressure in the injection unit may be between 900 bar to 1200 bar, in particular 1000 to 1100 bar.
  • the polymer composition in step d. comprises a physical blowing agent.
  • the physical blowing agent may be mixed together with the thermoplastic polymer midsole material prior to introducing the midsole polymer composition into the cavity. It may in certain embodiments be for example possible to mix the physical blowing agent with the thermoplastic polymer midsole material in the injection unit, e.g. in the barrel of the screw and barrel extruder. It may also be possible to infuse the physical blowing agent into the thermoplastic polymer midsole material prior to or during melting of the thermoplastic polymer midsole material.
  • the blowing agent may preferably be a physical blowing agent, such as N2 or CO2.
  • a physical blowing agent is a blowing agent which can induce foaming upon changing the physical state of the blowing agent or the physical conditions, such as pressure and/or temperature to induce foaming.
  • a chemical blowing agent is a blowing agent which releases a gas upon a chemical reaction, for example the release of N2 from a diazo moiety.
  • physical blowing agents are generally preferred.
  • the physical blowing agent is in a supercritical state, e.g. in the injection unit, respectively in the screw and barrel extruder. This may for example be the case in embodiments in which step d. is performed by SCIF.
  • the bottom section of the upper is during step d. at least partially or completely melted. In certain embodiments, the bottom section is at least partially or completely melted by the thermal energy of the molten thermoplastic polymer midsole material. This means, the thermal energy provided by the molten thermoplastic polymer midsole material is transferred to the bottom section upper upon which the latter melts. In particular embodiments, the bottom section is at least partially or completely melted only by the thermal energy of the molten thermoplastic polymer midsole material. This means, no additional thermal energy must be provided. In certain embodiments, the bottom section of the upper is covered prior to step d. and in particular prior to step c., by a thermoplastic film being preferably made from the thermoplastic polymer midsole material.
  • the sole molding unit is free of heating and/or cooling elements. This not only makes the sole molding unit less complex, but also improves production efficiency and the ecological footprint of the production process. In some embodiments, the sole molding unit is not heated or cooled during step d. and/or any of steps a. to d..
  • the upper assembly is inserted in step c. in such a manner into the sole molding unit that a closed sole molding compartment is formed which is defined by the sole molding unit and the upper assembly, in particular only by the sole molding unit and the upper assembly.
  • the sole molding unit may preferably comprise, respectively define, one or more injection inlets for introducing the midsole polymer composition into cavity, respectively into the sole molding compartment.
  • the sole molding compartment formed is typically arranged within the cavity of the sole molding unit.
  • the upper assembly is inserted in step c. in such a manner into the sole molding unit that a closed and sealed sole molding compartment is formed being defined by the sole molding unit and the upper assembly.
  • the upper assembly is configured such that it forms a sealing element, such as a sealing lip which provides for a fluid tight connection between the sole molding unit and the upper assembly.
  • the sealing element may for example be a part of the upper, particularly an integral part of the upper.
  • the sealing element may be releasably connected to the upper and/or the carrier.
  • a releasable connection as used herein is a connection which can be released without destroying the structural integrity of the connected elements.
  • a releasable connection can be released and reconnected multiple times.
  • a form-locking and/or force locking connection may be considered a releasable connection, while a material-bonding connection is not.
  • an outsole polymer composition which comprises a molten polymer outsole material, in particular a molten thermoplastic outsole material, is introduced into the cavity after step d. to provide an outsole being material-bonded to the foamed midsole.
  • the outsole provided is directly material-bonded to the foamed midsole.
  • a direct material-bonded connection of two elements means that they are connected with each other without an additional adhesive.
  • a direct material-bonded connection may be a fused connection in which the two elements are fused to each other.
  • the outsole polymer material may in some embodiments be the same material than the thermoplastic polymer upper material and/or than the molten thermoplastic polymer midsole material. Providing an outsole in such a manner allows to generate a foamed midsole being material-bonded to the upper and an outsole being material-bonded to the foamed midsole in a single unit without having to move the parts and intermediate products between different locations.
  • the polymer outsole material in particular the thermoplastic polymer outsole material is selected from rubber, polyolefins, such as polyethylene or polypropylene, polyester, such as PET or PBT, polyamide, polyether block amide (PEBAX), polyurethane, ethylene vinyl acetate (EVA) or mixtures thereof.
  • polyolefins such as polyethylene or polypropylene
  • polyester such as PET or PBT
  • polyamide polyether block amide (PEBAX)
  • PEBAX polyether block amide
  • EVA ethylene vinyl acetate
  • the shoe production system comprises a depositing unit which is configured for depositing a thermoplastic polymer upper material on the carrier being held by the movable robotic arm.
  • the depositing unit may be a depositing unit as described herein above, in particular with respect to embodiments described in the first aspect of the invention.
  • the depositing unit comprises a nozzle.
  • the nozzle may in certain embodiments comprise a material outlet and a plurality of air openings which are circumferentially arranged around the material outlet.
  • the air openings are further configured to apply pressure in such a manner on the molten thermoplastic polymer upper material exiting the material outlet that the exiting molten thermoplastic polymer upper material is applied, respectively deposited, on or to the carrier as a helical filament.
  • the depositing unit further comprises a pump, such as a dosing pump, which is configured to transport the molten thermoplastic polymer upper material out of nozzle and on the carrier.
  • a pump such as a dosing pump, which is configured to transport the molten thermoplastic polymer upper material out of nozzle and on the carrier.
  • Fig. 2 a schematic view onto a heel edge of a shoe according to an embodiment of the invention and/or having been obtained by the method according to an embodiment of the invention;
  • Fig. 3 a schematic view of how an upper assembly can be provided according to an embodiment of the invention and/or a show production system according to an embodiment of the invention
  • Fig. 4 a schematic top view of a nozzle as it can be used in some embodiments of the invention
  • Fig. 1 shows an upper assembly 2 which comprises a carrier 4 and an upper 3 being mounted on carrier 4.
  • Carrier 4 can in this embodiment or any other embodiment described herein for example be a last, i.e. a shoe last.
  • Upper 3 further comprises bottom section 5 which is made from a thermoplastic polymer upper material. In this embodiment, the boundary of bottom section 5 is indicated by the dashed line. However it may in some embodiments well be the case that the bottom section and the rest of the upper are identical, e.g. they may be made from the same material and/or have the same structure, such as a non-woven, knit or woven structure.
  • Upper assembly 2 is partially inserted into cavity 7 (see Fig. 3) defined by sole molding unit 6.
  • Sole molding compartment 9 is a part of the cavity defined by sole molding unit 6.
  • the upper assembly, in particular upper 3, respectively its bottom section 5, and the sole molding unit 6 form together a fluid tight connection.
  • sole molding compartment 9 is filled with air, e.g. ambient air. It may also in this or any other embodiment as described herein be possible to apply a sub-atmospheric pressure to sole molding compartment 9 after partially inserting upper assembly 2 into cavity 7 of sole molding unit 6.
  • a midsole polymer composition comprising a molten thermoplastic polymer midsole material is introduced into the cavity and thus also into sole molding compartment 9. This introduction may for example occur via injection inlet 24 which opens into cavity 7, respectively sole molding compartment 9. Since upper assembly 2 is partially introduced into cavity 7 and/or the sole molding compartment 9 is defined by upper assembly 2 and sole molding unit 6, the introduced molten thermoplastic polymer composition is provided onto bottom section 5 of upper 3 being introduced into cavity 7. As the molten thermoplastic polymer midsole material has an equal or higher melting temperature than the thermoplastic polymer upper material of bottom section 5 (and optionally of complete upper 3), the bottom section 5 partially or fully melts and a material-bonded connection being a fused connection between upper and the formed foamed midsole occurs without any additional adhesive.
  • step d foaming of the molten thermoplastic polymer midsole material is performed during step d. which provides the foamed midsole.
  • step d foaming of the molten thermoplastic polymer midsole material
  • step d foaming of the molten thermoplastic polymer midsole material
  • step d foaming of the molten thermoplastic polymer midsole material
  • step d foaming of the molten thermoplastic polymer midsole material
  • Fig. 2 shows a shoe 1 which can be obtained by the method according to the invention.
  • Shoe 1 comprises upper 3 and foamed midsole 8.
  • Upper 3 comprises a thermoplastic polymer upper material
  • foamed midsole 8 comprises a thermoplastic polymer midsole material.
  • shoe 1 comprises outsole 10 being material-bonded to foamed midsole 8.
  • Outsole 10 can for example be obtained in that after step d. of the method according to the invention, i.e. after foamed midsole 8 is produced and material-bonded to upper 3, a molten polymer outsole material, preferably a molten thermoplastic outsole material is introduced into cavity 7 defined by sole molding unit 6, respectively sole molding compartment 9 onto foamed midsole 8.
  • Introduction of the molten polymer outsole material may for example occur via injection inlet 24 or via an additional separate injection inlet. Only thereafter the thus produced shoe is typically removed from sole molding unit 6 and carrier 4 is removed from upper 3.
  • Fig. 2 shows a view of shoe 1 on its heel edge, i.e. as indicated by the coordinate system along longitudinal direction L towards the sole tip of shoe 1 .
  • Vertical direction V extends perpendicularly thereto from foamed midsole 8 towards upper 3, respectively in the worn or operative state from the ground to the foot of the wearer.
  • Transversal direction T is perpendicular to both longitudinal direction L and vertical direction V.
  • Shoe 1 further comprises intermediate material zone 16 which is indicated by the two parallel extending dashed lines.
  • intermediate material zone 16 which comprises both the thermoplastic polymer upper material of the upper, respectively bottom section 5 and also the thermoplastic polymer midsole material.
  • midsole section 17, i.e. the rest of foamed midsole 8 is devoid of the thermoplastic polymer upper material.
  • upper section 18 of upper 3, i.e. the rest of upper 18, is devoid of the thermoplastic polymer midsole material.
  • Against vertical direction V there is a gradient of the thermoplastic polymer upper material in intermediate material zone 16 extending from upper section 18 to midsole section 17. This gradient is decreasing, i.e.
  • the amount, such as the mass percentage, of the thermoplastic polymer upper material decreases from the intermediate material zone 16 extending from upper section 18 to midsole section 17. Furthermore, there is an opposite gradient in intermediate material zone 16 of the thermoplastic polymer midsole material extending along or in vertical direction V, i.e. from midsole section 17 to upper section 18. The gradient of the thermoplastic polymer midsole material decreases in intermediate material zone 16 from midsole section 17 to upper section 18. The gradient may also in this case be represented by a decreasing amount, e.g. mass percentage, of the thermoplastic polymer midsole material.
  • the intermediate material zone 16 may extend completely along the transverse direction T and the longitudinal direction L of shoe 1 and for example completely separate midsole section 17 from upper section 18.
  • intermediate material zone 16 may extend only along a certain portion of the transverse direction T and/or the longitudinal direction L of shoe 1.
  • the intermediate material zone may only be arranged at the periphery of shoe 1 and thus not in its center.
  • Fig. 3 shows a shoe production system 100 when being used to produce a shoe, e.g. for producing a shoe in the method according to the invention.
  • Shoe production system 100 comprises sole molding unit 6, such as sole molding unit 6 as described with respect to Fig. 1 , which defines cavity 7 being configured for molding a shoe sole, such as foamed midsole 8.
  • Cavity 7 is defined by sidewalls circumferentially surrounding the cavity and bottom wall delimiting the bottom of the cavity (not visible). As can be seen, the cavity is open at the top portion, which allows to insert upper assembly 2 directly into cavity 7.
  • shoe production system 100 comprises movable robotic arm 11 which holds carrier 4.
  • robotic arm 11 may form a form-locking and/or force-locking engagement with carrier 4.
  • robotic arm 11 forms a snap fitting engagement with carrier 4.
  • Robotic arm 11 is configured for moving carrier 4 in the 3-dimensional space.
  • robotic arm 11 is configured to move carrier 4 along three space axes, such as a vertical axis, a longitudinal axis and a transversal axis.
  • the movable robotic arm 11 is configured for rotating carrier 4 around a rotation axis.
  • Shoe production system 100 further comprises control unit 23 which is configured to control the movement of robotic arm 11, particularly with respect to nozzle 12 being further comprised in the shown shoe production system 100.
  • Nozzle 12 which may be part of depositing unit (see Fig. 6).
  • Fig. 3 depicts how upper assembly 2 can be provided in step a of the method according to the invention.
  • the molten thermoplastic polymer upper material is applied by nozzle 12 onto carrier 4.
  • the robotic arm moves carrier 4 in the 3 dimensional space with respect to nozzle 4.
  • molten thermoplastic polymer upper material is applied as a filament onto carrier 4 as a helical filament.
  • the upper assembly 2 comprising carrier 4 and upper 3 being mounted on carrier 4 is provided.
  • the upper assembly 2 is at least partially inserted into cavity 7 of sole molding unit 6, for example in the manner as shown in Fig. 1.
  • step d. of the method according to the invention is performed, i.e. the midsole polymer composition is introduced into cavity 7 and foaming of the molten thermoplastic polymer midsole material is performed to establish a direct fused connection between upper 3, respectively its bottom section 5, and foamed midsole 8 to produce shoe 1.
  • the complete shoe can be produced at a single location with a single system and fully automatically.
  • Fig. 4 shows a top view of nozzle 12 as it can be used in some embodiments of the invention.
  • Nozzle 12 comprises centrally arranged material outlet 13.
  • nozzle 12 comprises a plurality of air openings 14, 15 (only two openings are referenced for clarity purposes) being circumferentially arranged around material outlet 13.
  • each air opening is arranged such that air being guided through it is guided inwardly, i.e. in the direction of the filament of molten thermoplastic upper material exiting material outlet 13.
  • each air opening is also arranged such that pressurized air being guided through the air openings is applied in such a manner on the molten polymer upper material exiting the material outlet (i.e. the filament) that it is applied to the carrier as a helical filament.
  • Fig. 5 shows a perspective view of nozzle 12 shown in Fig. 4, which further clarifies the configuration of air openings 14 and 15.
  • Fig. 6 shows a detailed view of a depositing unit 19 as it can be used in some embodiments of the invention.
  • Depositing unit 19 comprises melting unit 20 which may be an extruder, such as a screw and barrel extruder having screw 21 and barrel 22.
  • Melting unit 20 comprises material inlet 26 through which the thermoplastic polymer upper material can be inserted into melting unit 20 for example as solid granulate. This material is then melted inside melting unit 20 and transported towards nozzle 12 which may be a nozzle as shown in Fig. 4 and 5. The molten thermoplastic polymer upper material is then applied via material outlet 13 out of nozzle 12. By means of pressurized air being applied through air inlet openings 14, 15 (see Fig. 4 and 5), the molten thermoplastic polymer upper material is applied to carrier 4 as a helical filament.
  • an upper assembly 2 By moving carrier 4 in the 3-dimensional space, for example by a movable robotic arm (not shown here, see Fig. 3), an upper assembly 2 can be provided.
  • the depositing unit can be controlled by depositing unit control unit 25. It may be possible that depositing unit control unit 25 is in some embodiments included into control unit 23 which controls the movement of movable robotic arm 11 (see Fig. 3).

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)

Abstract

Est divulgué un procédé de production de chaussure comprenant les étapes consistant à : a. fournir un ensemble supérieur (2), l'ensemble supérieur comprenant une tige (3) montée sur un support (4), la tige (3) comprenant une section inférieure (5) constituée d'un matériau supérieur polymère thermoplastique ; b. fournir une unité de moulage de semelle (6), l'unité de moulage de semelle définissant une cavité ; c. insérer l'ensemble supérieur (2) au moins partiellement dans la cavité ; introduire une composition de polymère de semelle intercalaire comprenant un matériau de semelle intercalaire de polymère thermoplastique fondu qui présente une température de fusion égale ou supérieure à la température de fusion du matériau supérieur de polymère thermoplastique dans la cavité et faire mousser le matériau de semelle intercalaire de polymère thermoplastique fondu à l'intérieur de la cavité pour fournir une semelle intercalaire en mousse et pour établir une liaison liée à un matériau entre la tige (3) et la semelle intercalaire en mousse (8). Sont en outre divulgués une chaussure et un système de production de chaussure.
PCT/EP2024/073400 2023-08-31 2024-08-21 Chaussure, systèmes de production de chaussure et procédé de production de chaussure Pending WO2025045674A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP24758811.4A EP4536471A1 (fr) 2023-08-31 2024-08-21 Chaussure, systèmes de production de chaussure et procédé de production de chaussure

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH9372023 2023-08-31
CHCH000937/2023 2023-08-31

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WO2025045674A1 true WO2025045674A1 (fr) 2025-03-06

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PCT/EP2024/073400 Pending WO2025045674A1 (fr) 2023-08-31 2024-08-21 Chaussure, systèmes de production de chaussure et procédé de production de chaussure

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Country Link
US (2) US20250072567A1 (fr)
EP (1) EP4536471A1 (fr)
TW (1) TW202525187A (fr)
WO (1) WO2025045674A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130233477A1 (en) * 2010-09-03 2013-09-12 Christian Bier Method for manufacturing at least one part of a sole assembly of a shoe, and sole assembly for a shoe
US20180153252A1 (en) * 2016-12-05 2018-06-07 Nike, Inc. Overmold direct attach sole
EP3711919B1 (fr) * 2019-03-19 2021-01-06 DESMA Schuhmaschinen GmbH Procédé et système de fabrication d'une semelle de chaussure ayant une feuille appliquée à la surface latérale de la semelle
US11284674B2 (en) * 2017-02-28 2022-03-29 Under Armour, Inc. Method of forming an article of footwear

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130233477A1 (en) * 2010-09-03 2013-09-12 Christian Bier Method for manufacturing at least one part of a sole assembly of a shoe, and sole assembly for a shoe
US20180153252A1 (en) * 2016-12-05 2018-06-07 Nike, Inc. Overmold direct attach sole
US11284674B2 (en) * 2017-02-28 2022-03-29 Under Armour, Inc. Method of forming an article of footwear
EP3711919B1 (fr) * 2019-03-19 2021-01-06 DESMA Schuhmaschinen GmbH Procédé et système de fabrication d'une semelle de chaussure ayant une feuille appliquée à la surface latérale de la semelle

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EP4536471A1 (fr) 2025-04-16

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